We aim at improving surgical quality through two directions. First, by computer assistance of the surgical decision-making process including managerial decisions, process of care, and outcome-based decisions. Second, by developing simulation systems for better surgical training and evaluation. A common methodological approach will be studied for both: the study of methods for symbolic and numeric modeling of the different technical and non-technical surgical skills. One aim is also to study low-cost and low-complexity technologies for, but not exclusively, neurosurgery.